log4j 初始化期间的 log4j 日志消息

Question

我试图设置 log4j（基于 xml）配置，使用 LevelRangeFilter，如官方网站。到目前为止一切都很好，除了 log4j 在初始化之前会吐出自己的日志消息。在'完成配置'行之后，一切正常。此外，还有一个错误，指出“log4j：找不到根记录器信息。这样可以吗？”。

谢谢。

log4j: reset attribute= "false".
log4j: Threshold ="null".
log4j: Level value for root is  [all].
log4j: root level set to ALL
log4j: Class name: [org.apache.log4j.FileAppender]
log4j: Setting property [file] to [logs/debug.log].
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [[%d{ISO8601}] %-5p %c %m %n].
log4j: Setting property [levelMax] to [DEBUG].
log4j: Setting property [levelMin] to [DEBUG].
log4j: Setting property [acceptOnMatch] to [true].
log4j: Adding filter of type [class org.apache.log4j.varia.LevelRangeFilter] to appender named [debug-out].
log4j: setFile called: logs/debug.log, true
log4j: setFile ended
..................
...................
log4j: Adding appender named [error-out] to category [root].
log4j: Class name: [org.apache.log4j.ConsoleAppender]
log4j: Setting property [target] to [System.err].
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [[%d{ISO8601}] %-5p %c %m %n].
log4j: Setting property [levelMin] to [INFO].
log4j: Setting property [levelMax] to [FATAL].
log4j: Adding filter of type [class org.apache.log4j.varia.LevelRangeFilter] to appender named [console].
log4j: Adding appender named [console] to category [root].
log4j: Reading configuration from URL file:/C:/Work/test/conf/log4j.xml
log4j: Could not find root logger information. Is this OK?
log4j: Finished configuring.

Answer 1

在 XML 配置 log4j.xml 中：

<log4j:configuration debug="true" xmlns:log4j='http://jakarta.apache.org/log4j/'>

将 debug 属性设置为 false。

快乐的记录:-)

Answer 2

您应该添加类似于 .xml 文件的内容。

<root>
        <priority value="DEBUG"/>
        <appender-ref ref="debug-out"/>
</root>